Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Example of related sequences, with length-7 exact matches (blue bars). The matches occur in runs of size 1, 3 and 2. If we sample matches starting with ry, we ‘hit’ the size-2 run if ry is at either of the sites marked by braces, in other words, if ry occurs in the length-3 sequence marked by arrows
